Apparently, Canada Customs rules changed in some fashion in September, 2008. I'm sorry that I can't be more specific about what changed, but my FO arrived at Fed Ex today in Edmonton, and I received a call from Fed Ex advising that the package was ready to be cleared by my independent customs broker.
When I spoke to a Fed Ex agent, I advised him that a previous watch had been cleared by Fed Ex and all I was required to do was to pay the duty which I did at point of delivery. This agent couldn't explain what had changed, but that over a certain value, brokerage is now required.
This will not be very helpful in that I can't explain what the change is or what to do about it, but if it happens to you, at least you will know that its happened to someone else.
So I guess its more of a "heads up". Will post again when issue resolved. Cheers, John